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Enhanced catalytic activity of Ni on η-Al2O3 and ZSM-5 on addition of ceria zirconia for the partial oxidation of methane

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dc.contributor.author Osman, Ahmed I.
dc.contributor.author Meudal, Jonathan
dc.contributor.author Laffir, Fathima R.
dc.contributor.author Thompson, Jillian
dc.contributor.author Rooney, David
dc.date.accessioned 2018-02-26T12:25:12Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10344/6612
dc.description peer-reviewed en_US
dc.description.abstract Nickel supported on η-Al2O3 and ZSM-5(80) catalysts with and without the addition of ceria-zirconia, were prepared by co-precipitation and wet impregnation methods and used for the low temperature catalytic partial oxidation of methane (CPOM). The catalysts were tested under reaction temperatures of between 400 and 700 °C with a WHSV of 63,000 mL g−1 h−1. The activity of the catalyst was found to be dependent on the support and preparation method. The optimum catalyst composition of those tested was 10% Ni on 25%CeO2-ZrO2/ZSM-5(80), prepared by co-precipitation, where the reaction reached equilibrium conversion at 400 °C (T50% < 400 °C), which is one of the lowest temperatures reported to date. Further increases in temperature led to improved selectivity to CO reaching 60% at 600 °C. Although the observed kinetics were found to be controlled by strong adsorption of CO at lower temperature, this was an equilibrium limitation with longer time on stream experiments showing no decrease in the catalyst activity over 25 h at 400 °C en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Applied Catalysis B: Environmental;212, pp. 68-79
dc.relation.uri https://doi.org/10.1016/j.apcatb.2016.12.058
dc.rights Nickel supported on η-Al2O3 and ZSM-5(80) catalysts with and without the addition of ceria-zirconia, were prepared by co-precipitation and wet impregnation methods and used for the low temperature catalytic partial oxidation of methane (CPOM). The catalysts were tested under reaction temperatures of between 400 and 700 °C with a WHSV of 63,000 mL g−1 h−1. The activity of the catalyst was found to be dependent on the support and preparation method. The optimum catalyst composition of those tested was 10% Ni on 25%CeO2-ZrO2/ZSM-5(80), prepared by co-precipitation, where the reaction reached equilibrium conversion at 400 °C (T50% < 400 °C), which is one of the lowest temperatures reported to date. Further increases in temperature led to improved selectivity to CO reaching 60% at 600 °C. Although the observed kinetics were found to be controlled by strong adsorption of CO at lower temperature, this was an equilibrium limitation with longer time on stream experiments showing no decrease in the catalyst activity over 25 h at 400 °C en_US
dc.subject methane en_US
dc.subject partial oxidation en_US
dc.subject zeolite support en_US
dc.subject oxygen carrier en_US
dc.subject nickel en_US
dc.title Enhanced catalytic activity of Ni on η-Al2O3 and ZSM-5 on addition of ceria zirconia for the partial oxidation of methane en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2018-02-26T12:14:56Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1016/j.apcatb.2016.12.058
dc.contributor.sponsor Qatar National Research Fund en_US
dc.date.embargoEndDate 2019-01-02
dc.embargo.terms 2019-01-02 en_US
dc.rights.accessrights info:eu-repo/semantics/OpenAccess en_US
dc.internal.rssid 2714870
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle Applied Catalysis B-Environmental
dc.description.status peer-reviewed


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